1 /**
2 * collectd - src/libvirt.c
3 * Copyright (C) 2006-2008 Red Hat Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the license is applicable.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 *
18 * Authors:
19 * Richard W.M. Jones <rjones@redhat.com>
20 **/
22 #include "collectd.h"
23 #include "common.h"
24 #include "plugin.h"
25 #include "configfile.h"
26 #include "utils_ignorelist.h"
27 #include "utils_complain.h"
29 #include <libvirt/libvirt.h>
30 #include <libvirt/virterror.h>
31 #include <libxml/parser.h>
32 #include <libxml/tree.h>
33 #include <libxml/xpath.h>
35 static const char *config_keys[] = {
36 "Connection",
38 "RefreshInterval",
40 "Domain",
41 "BlockDevice",
42 "InterfaceDevice",
43 "IgnoreSelected",
45 "HostnameFormat",
46 "InterfaceFormat",
48 NULL
49 };
50 #define NR_CONFIG_KEYS ((sizeof config_keys / sizeof config_keys[0]) - 1)
52 /* Connection. */
53 static virConnectPtr conn = 0;
54 static char *conn_string = NULL;
55 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
57 /* Seconds between list refreshes, 0 disables completely. */
58 static int interval = 60;
60 /* List of domains, if specified. */
61 static ignorelist_t *il_domains = NULL;
62 /* List of block devices, if specified. */
63 static ignorelist_t *il_block_devices = NULL;
64 /* List of network interface devices, if specified. */
65 static ignorelist_t *il_interface_devices = NULL;
67 static int ignore_device_match (ignorelist_t *,
68 const char *domname, const char *devpath);
70 /* Actual list of domains found on last refresh. */
71 static virDomainPtr *domains = NULL;
72 static int nr_domains = 0;
74 static void free_domains (void);
75 static int add_domain (virDomainPtr dom);
77 /* Actual list of block devices found on last refresh. */
78 struct block_device {
79 virDomainPtr dom; /* domain */
80 char *path; /* name of block device */
81 };
83 static struct block_device *block_devices = NULL;
84 static int nr_block_devices = 0;
86 static void free_block_devices (void);
87 static int add_block_device (virDomainPtr dom, const char *path);
89 /* Actual list of network interfaces found on last refresh. */
90 struct interface_device {
91 virDomainPtr dom; /* domain */
92 char *path; /* name of interface device */
93 char *address; /* mac address of interface device */
94 char *number; /* interface device number */
95 };
97 static struct interface_device *interface_devices = NULL;
98 static int nr_interface_devices = 0;
100 static void free_interface_devices (void);
101 static int add_interface_device (virDomainPtr dom, const char *path, const char *address, unsigned int number);
103 /* HostnameFormat. */
104 #define HF_MAX_FIELDS 3
106 enum hf_field {
107 hf_none = 0,
108 hf_hostname,
109 hf_name,
110 hf_uuid
111 };
113 static enum hf_field hostname_format[HF_MAX_FIELDS] =
114 { hf_name };
116 /* InterfaceFormat. */
117 enum if_field {
118 if_address,
119 if_name,
120 if_number
121 };
123 static enum if_field interface_format = if_name;
125 /* Time that we last refreshed. */
126 static time_t last_refresh = (time_t) 0;
128 static int refresh_lists (void);
130 /* ERROR(...) macro for virterrors. */
131 #define VIRT_ERROR(conn,s) do { \
132 virErrorPtr err; \
133 err = (conn) ? virConnGetLastError ((conn)) : virGetLastError (); \
134 if (err) ERROR ("%s: %s", (s), err->message); \
135 } while(0)
137 static void
138 init_value_list (value_list_t *vl, virDomainPtr dom)
139 {
140 int i, n;
141 const char *name;
142 char uuid[VIR_UUID_STRING_BUFLEN];
144 sstrncpy (vl->plugin, "libvirt", sizeof (vl->plugin));
146 vl->host[0] = '\0';
148 /* Construct the hostname field according to HostnameFormat. */
149 for (i = 0; i < HF_MAX_FIELDS; ++i) {
150 if (hostname_format[i] == hf_none)
151 continue;
153 n = DATA_MAX_NAME_LEN - strlen (vl->host) - 2;
155 if (i > 0 && n >= 1) {
156 strncat (vl->host, ":", 1);
157 n--;
158 }
160 switch (hostname_format[i]) {
161 case hf_none: break;
162 case hf_hostname:
163 strncat (vl->host, hostname_g, n);
164 break;
165 case hf_name:
166 name = virDomainGetName (dom);
167 if (name)
168 strncat (vl->host, name, n);
169 break;
170 case hf_uuid:
171 if (virDomainGetUUIDString (dom, uuid) == 0)
172 strncat (vl->host, uuid, n);
173 break;
174 }
175 }
177 vl->host[sizeof (vl->host) - 1] = '\0';
178 } /* void init_value_list */
180 static void
181 cpu_submit (unsigned long long cpu_time,
182 virDomainPtr dom, const char *type)
183 {
184 value_t values[1];
185 value_list_t vl = VALUE_LIST_INIT;
187 init_value_list (&vl, dom);
189 values[0].derive = cpu_time;
191 vl.values = values;
192 vl.values_len = 1;
194 sstrncpy (vl.type, type, sizeof (vl.type));
196 plugin_dispatch_values (&vl);
197 }
199 static void
200 vcpu_submit (derive_t cpu_time,
201 virDomainPtr dom, int vcpu_nr, const char *type)
202 {
203 value_t values[1];
204 value_list_t vl = VALUE_LIST_INIT;
206 init_value_list (&vl, dom);
208 values[0].derive = cpu_time;
209 vl.values = values;
210 vl.values_len = 1;
212 sstrncpy (vl.type, type, sizeof (vl.type));
213 ssnprintf (vl.type_instance, sizeof (vl.type_instance), "%d", vcpu_nr);
215 plugin_dispatch_values (&vl);
216 }
218 static void
219 submit_derive2 (const char *type, derive_t v0, derive_t v1,
220 virDomainPtr dom, const char *devname)
221 {
222 value_t values[2];
223 value_list_t vl = VALUE_LIST_INIT;
225 init_value_list (&vl, dom);
227 values[0].derive = v0;
228 values[1].derive = v1;
229 vl.values = values;
230 vl.values_len = 2;
232 sstrncpy (vl.type, type, sizeof (vl.type));
233 sstrncpy (vl.type_instance, devname, sizeof (vl.type_instance));
235 plugin_dispatch_values (&vl);
236 } /* void submit_derive2 */
238 static int
239 lv_init (void)
240 {
241 if (virInitialize () != 0)
242 return -1;
244 return 0;
245 }
247 static int
248 lv_config (const char *key, const char *value)
249 {
250 if (virInitialize () != 0)
251 return 1;
253 if (il_domains == NULL)
254 il_domains = ignorelist_create (1);
255 if (il_block_devices == NULL)
256 il_block_devices = ignorelist_create (1);
257 if (il_interface_devices == NULL)
258 il_interface_devices = ignorelist_create (1);
260 if (strcasecmp (key, "Connection") == 0) {
261 char *tmp = strdup (value);
262 if (tmp == NULL) {
263 ERROR ("libvirt plugin: Connection strdup failed.");
264 return 1;
265 }
266 sfree (conn_string);
267 conn_string = tmp;
268 return 0;
269 }
271 if (strcasecmp (key, "RefreshInterval") == 0) {
272 char *eptr = NULL;
273 interval = strtol (value, &eptr, 10);
274 if (eptr == NULL || *eptr != '\0') return 1;
275 return 0;
276 }
278 if (strcasecmp (key, "Domain") == 0) {
279 if (ignorelist_add (il_domains, value)) return 1;
280 return 0;
281 }
282 if (strcasecmp (key, "BlockDevice") == 0) {
283 if (ignorelist_add (il_block_devices, value)) return 1;
284 return 0;
285 }
286 if (strcasecmp (key, "InterfaceDevice") == 0) {
287 if (ignorelist_add (il_interface_devices, value)) return 1;
288 return 0;
289 }
291 if (strcasecmp (key, "IgnoreSelected") == 0) {
292 if (IS_TRUE (value))
293 {
294 ignorelist_set_invert (il_domains, 0);
295 ignorelist_set_invert (il_block_devices, 0);
296 ignorelist_set_invert (il_interface_devices, 0);
297 }
298 else
299 {
300 ignorelist_set_invert (il_domains, 1);
301 ignorelist_set_invert (il_block_devices, 1);
302 ignorelist_set_invert (il_interface_devices, 1);
303 }
304 return 0;
305 }
307 if (strcasecmp (key, "HostnameFormat") == 0) {
308 char *value_copy;
309 char *fields[HF_MAX_FIELDS];
310 int i, n;
312 value_copy = strdup (value);
313 if (value_copy == NULL) {
314 ERROR ("libvirt plugin: strdup failed.");
315 return -1;
316 }
318 n = strsplit (value_copy, fields, HF_MAX_FIELDS);
319 if (n < 1) {
320 sfree (value_copy);
321 ERROR ("HostnameFormat: no fields");
322 return -1;
323 }
325 for (i = 0; i < n; ++i) {
326 if (strcasecmp (fields[i], "hostname") == 0)
327 hostname_format[i] = hf_hostname;
328 else if (strcasecmp (fields[i], "name") == 0)
329 hostname_format[i] = hf_name;
330 else if (strcasecmp (fields[i], "uuid") == 0)
331 hostname_format[i] = hf_uuid;
332 else {
333 sfree (value_copy);
334 ERROR ("unknown HostnameFormat field: %s", fields[i]);
335 return -1;
336 }
337 }
338 sfree (value_copy);
340 for (i = n; i < HF_MAX_FIELDS; ++i)
341 hostname_format[i] = hf_none;
343 return 0;
344 }
346 if (strcasecmp (key, "InterfaceFormat") == 0) {
347 if (strcasecmp (value, "name") == 0)
348 interface_format = if_name;
349 else if (strcasecmp (value, "address") == 0)
350 interface_format = if_address;
351 else if (strcasecmp (value, "number") == 0)
352 interface_format = if_number;
353 else {
354 ERROR ("unknown InterfaceFormat: %s", value);
355 return -1;
356 }
357 return 0;
358 }
360 /* Unrecognised option. */
361 return -1;
362 }
364 static int
365 lv_read (void)
366 {
367 time_t t;
368 int i;
370 if (conn == NULL) {
371 /* `conn_string == NULL' is acceptable. */
372 conn = virConnectOpenReadOnly (conn_string);
373 if (conn == NULL) {
374 c_complain (LOG_ERR, &conn_complain,
375 "libvirt plugin: Unable to connect: "
376 "virConnectOpenReadOnly failed.");
377 return -1;
378 }
379 }
380 c_release (LOG_NOTICE, &conn_complain,
381 "libvirt plugin: Connection established.");
383 time (&t);
385 /* Need to refresh domain or device lists? */
386 if ((last_refresh == (time_t) 0) ||
387 ((interval > 0) && ((last_refresh + interval) <= t))) {
388 if (refresh_lists () != 0) {
389 if (conn != NULL)
390 virConnectClose (conn);
391 conn = NULL;
392 return -1;
393 }
394 last_refresh = t;
395 }
397 #if 0
398 for (i = 0; i < nr_domains; ++i)
399 fprintf (stderr, "domain %s\n", virDomainGetName (domains[i]));
400 for (i = 0; i < nr_block_devices; ++i)
401 fprintf (stderr, "block device %d %s:%s\n",
402 i, virDomainGetName (block_devices[i].dom),
403 block_devices[i].path);
404 for (i = 0; i < nr_interface_devices; ++i)
405 fprintf (stderr, "interface device %d %s:%s\n",
406 i, virDomainGetName (interface_devices[i].dom),
407 interface_devices[i].path);
408 #endif
410 /* Get CPU usage, VCPU usage for each domain. */
411 for (i = 0; i < nr_domains; ++i) {
412 virDomainInfo info;
413 virVcpuInfoPtr vinfo = NULL;
414 int status;
415 int j;
417 status = virDomainGetInfo (domains[i], &info);
418 if (status != 0)
419 {
420 ERROR ("libvirt plugin: virDomainGetInfo failed with status %i.",
421 status);
422 continue;
423 }
425 cpu_submit (info.cpuTime, domains[i], "virt_cpu_total");
427 vinfo = malloc (info.nrVirtCpu * sizeof (vinfo[0]));
428 if (vinfo == NULL) {
429 ERROR ("libvirt plugin: malloc failed.");
430 continue;
431 }
433 status = virDomainGetVcpus (domains[i], vinfo, info.nrVirtCpu,
434 /* cpu map = */ NULL, /* cpu map length = */ 0);
435 if (status < 0)
436 {
437 ERROR ("libvirt plugin: virDomainGetVcpus failed with status %i.",
438 status);
439 free (vinfo);
440 continue;
441 }
443 for (j = 0; j < info.nrVirtCpu; ++j)
444 vcpu_submit (vinfo[j].cpuTime,
445 domains[i], vinfo[j].number, "virt_vcpu");
447 sfree (vinfo);
448 }
450 /* Get block device stats for each domain. */
451 for (i = 0; i < nr_block_devices; ++i) {
452 struct _virDomainBlockStats stats;
454 if (virDomainBlockStats (block_devices[i].dom, block_devices[i].path,
455 &stats, sizeof stats) != 0)
456 continue;
458 if ((stats.rd_req != -1) && (stats.wr_req != -1))
459 submit_derive2 ("disk_ops",
460 (derive_t) stats.rd_req, (derive_t) stats.wr_req,
461 block_devices[i].dom, block_devices[i].path);
463 if ((stats.rd_bytes != -1) && (stats.wr_bytes != -1))
464 submit_derive2 ("disk_octets",
465 (derive_t) stats.rd_bytes, (derive_t) stats.wr_bytes,
466 block_devices[i].dom, block_devices[i].path);
467 } /* for (nr_block_devices) */
469 /* Get interface stats for each domain. */
470 for (i = 0; i < nr_interface_devices; ++i) {
471 struct _virDomainInterfaceStats stats;
472 char *display_name = NULL;
475 switch (interface_format) {
476 case if_address:
477 display_name = interface_devices[i].address;
478 break;
479 case if_number:
480 display_name = interface_devices[i].number;
481 break;
482 case if_name:
483 default:
484 display_name = interface_devices[i].path;
485 }
487 if (virDomainInterfaceStats (interface_devices[i].dom,
488 interface_devices[i].path,
489 &stats, sizeof stats) != 0)
490 continue;
492 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
493 submit_derive2 ("if_octets",
494 (derive_t) stats.rx_bytes, (derive_t) stats.tx_bytes,
495 interface_devices[i].dom, display_name);
497 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
498 submit_derive2 ("if_packets",
499 (derive_t) stats.rx_packets, (derive_t) stats.tx_packets,
500 interface_devices[i].dom, display_name);
502 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
503 submit_derive2 ("if_errors",
504 (derive_t) stats.rx_errs, (derive_t) stats.tx_errs,
505 interface_devices[i].dom, display_name);
507 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
508 submit_derive2 ("if_dropped",
509 (derive_t) stats.rx_drop, (derive_t) stats.tx_drop,
510 interface_devices[i].dom, display_name);
511 } /* for (nr_interface_devices) */
513 return 0;
514 }
516 static int
517 refresh_lists (void)
518 {
519 int n;
521 n = virConnectNumOfDomains (conn);
522 if (n < 0) {
523 VIRT_ERROR (conn, "reading number of domains");
524 return -1;
525 }
527 if (n > 0) {
528 int i;
529 int *domids;
531 /* Get list of domains. */
532 domids = malloc (sizeof (int) * n);
533 if (domids == 0) {
534 ERROR ("libvirt plugin: malloc failed.");
535 return -1;
536 }
538 n = virConnectListDomains (conn, domids, n);
539 if (n < 0) {
540 VIRT_ERROR (conn, "reading list of domains");
541 sfree (domids);
542 return -1;
543 }
545 free_block_devices ();
546 free_interface_devices ();
547 free_domains ();
549 /* Fetch each domain and add it to the list, unless ignore. */
550 for (i = 0; i < n; ++i) {
551 virDomainPtr dom = NULL;
552 const char *name;
553 char *xml = NULL;
554 xmlDocPtr xml_doc = NULL;
555 xmlXPathContextPtr xpath_ctx = NULL;
556 xmlXPathObjectPtr xpath_obj = NULL;
557 int j;
559 dom = virDomainLookupByID (conn, domids[i]);
560 if (dom == NULL) {
561 VIRT_ERROR (conn, "virDomainLookupByID");
562 /* Could be that the domain went away -- ignore it anyway. */
563 continue;
564 }
566 name = virDomainGetName (dom);
567 if (name == NULL) {
568 VIRT_ERROR (conn, "virDomainGetName");
569 goto cont;
570 }
572 if (il_domains && ignorelist_match (il_domains, name) != 0)
573 goto cont;
575 if (add_domain (dom) < 0) {
576 ERROR ("libvirt plugin: malloc failed.");
577 goto cont;
578 }
580 /* Get a list of devices for this domain. */
581 xml = virDomainGetXMLDesc (dom, 0);
582 if (!xml) {
583 VIRT_ERROR (conn, "virDomainGetXMLDesc");
584 goto cont;
585 }
587 /* Yuck, XML. Parse out the devices. */
588 xml_doc = xmlReadDoc ((xmlChar *) xml, NULL, NULL, XML_PARSE_NONET);
589 if (xml_doc == NULL) {
590 VIRT_ERROR (conn, "xmlReadDoc");
591 goto cont;
592 }
594 xpath_ctx = xmlXPathNewContext (xml_doc);
596 /* Block devices. */
597 xpath_obj = xmlXPathEval
598 ((xmlChar *) "/domain/devices/disk/target[@dev]",
599 xpath_ctx);
600 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
601 xpath_obj->nodesetval == NULL)
602 goto cont;
604 for (j = 0; j < xpath_obj->nodesetval->nodeNr; ++j) {
605 xmlNodePtr node;
606 char *path = NULL;
608 node = xpath_obj->nodesetval->nodeTab[j];
609 if (!node) continue;
610 path = (char *) xmlGetProp (node, (xmlChar *) "dev");
611 if (!path) continue;
613 if (il_block_devices &&
614 ignore_device_match (il_block_devices, name, path) != 0)
615 goto cont2;
617 add_block_device (dom, path);
618 cont2:
619 if (path) xmlFree (path);
620 }
621 xmlXPathFreeObject (xpath_obj);
623 /* Network interfaces. */
624 xpath_obj = xmlXPathEval
625 ((xmlChar *) "/domain/devices/interface[target[@dev]]",
626 xpath_ctx);
627 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
628 xpath_obj->nodesetval == NULL)
629 goto cont;
631 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
633 for (j = 0; j < xml_interfaces->nodeNr; ++j) {
634 char *path = NULL;
635 char *address = NULL;
636 xmlNodePtr xml_interface;
638 xml_interface = xml_interfaces->nodeTab[j];
639 if (!xml_interface) continue;
640 xmlNodePtr child = NULL;
642 for (child = xml_interface->children; child; child = child->next) {
643 if (child->type != XML_ELEMENT_NODE) continue;
645 if (xmlStrEqual(child->name, (const xmlChar *) "target")) {
646 path = (char *) xmlGetProp (child, (const xmlChar *) "dev");
647 if (!path) continue;
648 } else if (xmlStrEqual(child->name, (const xmlChar *) "mac")) {
649 address = (char *) xmlGetProp (child, (const xmlChar *) "address");
650 if (!address) continue;
651 }
652 }
654 if (il_interface_devices &&
655 (ignore_device_match (il_interface_devices, name, path) != 0 ||
656 ignore_device_match (il_interface_devices, name, address) != 0))
657 goto cont3;
659 add_interface_device (dom, path, address, j+1);
660 cont3:
661 if (path) xmlFree (path);
662 if (address) xmlFree (address);
663 }
665 cont:
666 if (xpath_obj) xmlXPathFreeObject (xpath_obj);
667 if (xpath_ctx) xmlXPathFreeContext (xpath_ctx);
668 if (xml_doc) xmlFreeDoc (xml_doc);
669 sfree (xml);
670 }
672 sfree (domids);
673 }
675 return 0;
676 }
678 static void
679 free_domains ()
680 {
681 int i;
683 if (domains) {
684 for (i = 0; i < nr_domains; ++i)
685 virDomainFree (domains[i]);
686 sfree (domains);
687 }
688 domains = NULL;
689 nr_domains = 0;
690 }
692 static int
693 add_domain (virDomainPtr dom)
694 {
695 virDomainPtr *new_ptr;
696 int new_size = sizeof (domains[0]) * (nr_domains+1);
698 if (domains)
699 new_ptr = realloc (domains, new_size);
700 else
701 new_ptr = malloc (new_size);
703 if (new_ptr == NULL)
704 return -1;
706 domains = new_ptr;
707 domains[nr_domains] = dom;
708 return nr_domains++;
709 }
711 static void
712 free_block_devices ()
713 {
714 int i;
716 if (block_devices) {
717 for (i = 0; i < nr_block_devices; ++i)
718 sfree (block_devices[i].path);
719 sfree (block_devices);
720 }
721 block_devices = NULL;
722 nr_block_devices = 0;
723 }
725 static int
726 add_block_device (virDomainPtr dom, const char *path)
727 {
728 struct block_device *new_ptr;
729 int new_size = sizeof (block_devices[0]) * (nr_block_devices+1);
730 char *path_copy;
732 path_copy = strdup (path);
733 if (!path_copy)
734 return -1;
736 if (block_devices)
737 new_ptr = realloc (block_devices, new_size);
738 else
739 new_ptr = malloc (new_size);
741 if (new_ptr == NULL) {
742 sfree (path_copy);
743 return -1;
744 }
745 block_devices = new_ptr;
746 block_devices[nr_block_devices].dom = dom;
747 block_devices[nr_block_devices].path = path_copy;
748 return nr_block_devices++;
749 }
751 static void
752 free_interface_devices ()
753 {
754 int i;
756 if (interface_devices) {
757 for (i = 0; i < nr_interface_devices; ++i) {
758 sfree (interface_devices[i].path);
759 sfree (interface_devices[i].address);
760 sfree (interface_devices[i].number);
761 }
762 sfree (interface_devices);
763 }
764 interface_devices = NULL;
765 nr_interface_devices = 0;
766 }
768 static int
769 add_interface_device (virDomainPtr dom, const char *path, const char *address, unsigned int number)
770 {
771 struct interface_device *new_ptr;
772 int new_size = sizeof (interface_devices[0]) * (nr_interface_devices+1);
773 char *path_copy, *address_copy, number_string[15];
775 path_copy = strdup (path);
776 if (!path_copy) return -1;
778 address_copy = strdup (address);
779 if (!address_copy) {
780 sfree(path_copy);
781 return -1;
782 }
784 snprintf(number_string, sizeof (number_string), "interface-%u", number);
786 if (interface_devices)
787 new_ptr = realloc (interface_devices, new_size);
788 else
789 new_ptr = malloc (new_size);
791 if (new_ptr == NULL) {
792 sfree (path_copy);
793 sfree (address_copy);
794 return -1;
795 }
796 interface_devices = new_ptr;
797 interface_devices[nr_interface_devices].dom = dom;
798 interface_devices[nr_interface_devices].path = path_copy;
799 interface_devices[nr_interface_devices].address = address_copy;
800 interface_devices[nr_interface_devices].number = strdup(number_string);
801 return nr_interface_devices++;
802 }
804 static int
805 ignore_device_match (ignorelist_t *il, const char *domname, const char *devpath)
806 {
807 char *name;
808 int n, r;
810 n = sizeof (char) * (strlen (domname) + strlen (devpath) + 2);
811 name = malloc (n);
812 if (name == NULL) {
813 ERROR ("libvirt plugin: malloc failed.");
814 return 0;
815 }
816 ssnprintf (name, n, "%s:%s", domname, devpath);
817 r = ignorelist_match (il, name);
818 sfree (name);
819 return r;
820 }
822 static int
823 lv_shutdown (void)
824 {
825 free_block_devices ();
826 free_interface_devices ();
827 free_domains ();
829 if (conn != NULL)
830 virConnectClose (conn);
831 conn = NULL;
833 ignorelist_free (il_domains);
834 il_domains = NULL;
835 ignorelist_free (il_block_devices);
836 il_block_devices = NULL;
837 ignorelist_free (il_interface_devices);
838 il_interface_devices = NULL;
840 return 0;
841 }
843 void
844 module_register (void)
845 {
846 plugin_register_config ("libvirt",
847 lv_config,
848 config_keys, NR_CONFIG_KEYS);
849 plugin_register_init ("libvirt", lv_init);
850 plugin_register_read ("libvirt", lv_read);
851 plugin_register_shutdown ("libvirt", lv_shutdown);
852 }
854 /*
855 * vim: shiftwidth=4 tabstop=8 softtabstop=4 expandtab fdm=marker
856 */